Refactor i18n structure and update language files

- Removed old validation and common language files for English and Indonesian.
- Created new language files for English and Indonesian under the updated directory structure.
- Updated setup to reflect new language file paths and changed default language to English.
- Modified storage keys from 'locale' to 'language' for consistency.
- Added new language files for various modules including bookmarks, history, navigation, and system settings.
- Introduced new booking module language files for both English and Indonesian.
- Implemented a login page component with basic structure.

apps/landing/src/core/storage/index.ts

@@ -1,15 +1,13 @@
 import { createLocalStorage } from '@repo/core-storage';
 
 export const AppStorageKey = {
-  LOCALE: 'app_locale',
+  LANGUAGE: 'app_language',
 } as const;
 
 export type AppStorageKeyValue = (typeof AppStorageKey)[keyof typeof AppStorageKey];
 
-export const PLAIN_KEYS = new Set<AppStorageKeyValue>([
-  AppStorageKey.LOCALE,
-]);
+export const PLAIN_KEYS = new Set<AppStorageKeyValue>([AppStorageKey.LANGUAGE]);
 
 export const secureStorage = createLocalStorage<AppStorageKeyValue>({
-  plainTextKeys: PLAIN_KEYS
+  plainTextKeys: PLAIN_KEYS,
 });